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The Sleep Debt Ledger

A week of nights kept as an account, because a bad night isn't an event — it's a balance. You set the hours you actually need at the top, and then each night gets one line: what you got, and what happened. The sheet scores every night against your figure and prints the difference beside it, which is the part most sleep trackers stop at. What it does instead is carry the number forward. The lane down the right draws the running balance around a fixed zero line — bars to the left are the debt stacking up night after night, bars to the right are the rare morning you paid some of it back. That's the whole argument of the page: no single row on it looks like a problem, and the lane still ends up where it ends up. The closing box states the week's final figure, names the worst night, and says plainly how many nights at an extra hour it would take to clear — with a footnote admitting that arithmetic flatters you, because lost sleep is not fully repayable. Nights you leave out print ruled, to fill in as the week goes, and a night written in hours the sheet can't read stays out of the balance rather than being scored as a good one.